Github user neykov commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/565#discussion_r106215140
--- Diff:
core/src/main/java/org/apache/brooklyn/core/objs/AbstractConfigurationSupportInternal.java
---
@@ -138,18 +131,14 @@ public T call() {
// getRaw returns Maybe(val) if the key was explicitly set (where
val can be null)
// or Absent if the config key was unset.
Object unresolved = getRaw(key).or(key.getDefaultValue());
- final Object marker = new Object();
- // Give tasks a short grace period to resolve.
- Object resolved = Tasks.resolving(unresolved)
+ Maybe<Object> resolved = Tasks.resolving(unresolved)
.as(Object.class)
- .defaultValue(marker)
.immediately(true)
.deep(true)
.context(getContext())
- .get();
- return (resolved != marker)
- ? TypeCoercions.tryCoerce(resolved, key.getTypeToken())
- : Maybe.<T>absent();
+ .getMaybe();
+ if (resolved.isAbsent()) return
Maybe.Absent.<T>castAbsent(resolved);
+ return TypeCoercions.tryCoerce(resolved.get(), key.getTypeToken());
--- End diff --
Now that there's no marker object you can rely on `ValueResolver`'s
coercion directly (by passing in the expected type).
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